{"id":4788,"date":"2022-05-25T09:35:26","date_gmt":"2022-05-25T07:35:26","guid":{"rendered":"https:\/\/geopard.tech\/?p=4788"},"modified":"2023-08-11T17:33:47","modified_gmt":"2023-08-11T15:33:47","slug":"preco-je-dolezita-ucinnost-vyuzitia-dusika","status":"publish","type":"post","link":"https:\/\/geopard.tech\/sk\/blog\/why-nitrogen-use-efficiency-is-important\/","title":{"rendered":"Pre\u010do je \u00fa\u010dinnos\u0165 vyu\u017eitia dus\u00edka d\u00f4le\u017eit\u00e1?"},"content":{"rendered":"

Efekt\u00edvnos\u0165 vyu\u017e\u00edvania dus\u00edka je u\u017e desa\u0165ro\u010dia \u0161iroko pou\u017e\u00edvan\u00fdm konceptom v po\u013enohospod\u00e1rskom v\u00fdskume. Efekt\u00edvnos\u0165 vyu\u017e\u00edvania dus\u00edka sa \u010dasto opisuje ako pomer v\u00fdnosu plodiny k mno\u017estvu aplikovan\u00e9ho alebo prijat\u00e9ho dus\u00edkat\u00e9ho hnojiva plodinou.<\/p>\n

\u010co je \u00fa\u010dinnos\u0165 vyu\u017eitia dus\u00edka?<\/h2>\n

\u00da\u010dinnos\u0165 vyu\u017eitia dus\u00edka (NUE) je term\u00edn, ktor\u00fd sa pou\u017e\u00edva na opis \u00fa\u010dinnosti rastliny pri vyu\u017e\u00edvan\u00ed aplikovan\u00e9ho alebo fixovan\u00e9ho dus\u00edka na produkciu biomasy. \u010ealej sa definuje ako pomer medzi v\u00fdnosom plodiny a mno\u017estvom dus\u00edka absorbovan\u00e9ho z p\u00f4dy cez korene alebo z atmosf\u00e9ry prostredn\u00edctvom fix\u00e1cie bakt\u00e9riami.<\/p>\n

NUE je d\u00f4le\u017eit\u00fdm znakom v programoch \u0161\u013eachtenia plod\u00edn, ktor\u00fdch cie\u013eom je zlep\u0161i\u0165 v\u00fdnosy plod\u00edn a z\u00e1rove\u0148 zn\u00ed\u017ei\u0165 vstupn\u00e9 n\u00e1klady, ako s\u00fa hnojiv\u00e1, a z\u00e1rove\u0148 udr\u017ea\u0165 dus\u00edk v \u017eivotnom prostred\u00ed. Zn\u00ed\u017eenie vstupov hnoj\u00edv by viedlo k ni\u017e\u0161\u00edm emisi\u00e1m sklen\u00edkov\u00fdch plynov a men\u0161iemu vyplavovaniu dusi\u010dnanov do podzemn\u00fdch a povrchov\u00fdch v\u00f4d.<\/p>\n

Zv\u00fd\u0161enie NEE m\u00f4\u017ee pom\u00f4c\u0165 zn\u00ed\u017ei\u0165 vstupn\u00e9 n\u00e1klady po\u013enohospod\u00e1rov a zv\u00fd\u0161i\u0165 zisky. Vysok\u00e1 \u00fa\u010dinnos\u0165 vyu\u017e\u00edvania dus\u00edka znamen\u00e1, \u017ee plodina absorbuje viac aplikovan\u00e9ho dus\u00edka, \u010do m\u00e1 pozit\u00edvny vplyv na \u017eivotn\u00e9 prostredie aj na zisky po\u013enohospod\u00e1rov.<\/p>\n

Okrem toho je to miera mno\u017estva dus\u00edka (N) prijat\u00e9ho plodinou v porovnan\u00ed s aplikovan\u00fdm mno\u017estvom. Je to d\u00f4le\u017eit\u00fd ukazovate\u013e environment\u00e1lnej udr\u017eate\u013enosti a ekonomickej efekt\u00edvnosti v rastlinnej v\u00fdrobe, preto\u017ee ukazuje vz\u0165ah medzi vstupmi N a v\u00fdnosom plodiny.<\/p>\n

\u00da\u010dinnos\u0165 vyu\u017eitia dus\u00edka 50% znamen\u00e1, \u017ee polovica aplikovan\u00e9ho dus\u00edka zostala v plodine po ukon\u010den\u00ed rastu.<\/p>\n

Napr\u00edklad, ak m\u00e1te k dispoz\u00edcii 100 libier dus\u00edkat\u00e9ho hnojiva na produkciu kukurice a aplikujete ho naraz pred v\u00fdsadbou, ale plodina po\u010das vegeta\u010dn\u00e9ho obdobia absorbuje iba 70 libier, va\u0161a agronomick\u00e1 NUE je 70%. To znamen\u00e1, \u017ee 30 libier sa stratilo do \u017eivotn\u00e9ho prostredia v d\u00f4sledku denitrifik\u00e1cie a vyplavovania.<\/p>\n

M\u00f4\u017ee sa vyjadri\u0165 bu\u010f ako percento (napr. 50%), alebo ako pomer (napr. 1:1). V oboch pr\u00edpadoch sa jednotky rovnaj\u00fa hmotnostn\u00fdm jednotk\u00e1m, ako s\u00fa libry na aker (lb\/acre), kilogramy na hekt\u00e1r (kg\/ha) alebo gramy na \u0161tvorcov\u00fd meter (g\/m2).<\/p>\n

Vysok\u00e1 agronomick\u00e1 efekt\u00edvnos\u0165 vyu\u017e\u00edvania \u017eiv\u00edn (NUE) znamen\u00e1, \u017ee plodina vyu\u017eije viac dus\u00edka dodan\u00e9ho plodine \u2013 \u010do je \u017eiaduci stav z h\u013eadiska ziskovej mar\u017ee, environment\u00e1lnych aspektov a udr\u017eate\u013enosti. Pochopenie rozdielu medzi efekt\u00edvnos\u0165ou vyu\u017e\u00edvania \u017eiv\u00edn a agronomickou efekt\u00edvnos\u0165ou vyu\u017e\u00edvania dus\u00edka (NUE) m\u00f4\u017ee by\u0165 m\u00e4t\u00face. V z\u00e1sade mo\u017eno efekt\u00edvnos\u0165 vyu\u017e\u00edvania \u017eiv\u00edn definova\u0165 ako ak\u00e9ko\u013evek meradlo toho, ako dobre rastlina vyu\u017e\u00edva \u017eiviny.<\/p>\n

Je to podmno\u017eina tohto, ktor\u00e1 sa t\u00fdka pravdepodobn\u00e9ho zv\u00fd\u0161enia v\u00fdnosu plod\u00edn, ke\u010f po\u013enohospod\u00e1ri aplikuj\u00fa dodato\u010dn\u00e9 dus\u00edkat\u00e9 hnojivo. Zameranie na v\u00fdnos plod\u00edn je to, \u010do odli\u0161uje agronomick\u00fa NUE od in\u00fdch ukazovate\u013eov pr\u00edjmu \u017eiv\u00edn rastlinami.<\/p>\n

Pou\u017e\u00edva pomer produkcie zrna (alebo n\u00e1rastu produkcie zrna) k mno\u017estvu aplikovan\u00e9ho hnojiva. Napr\u00edklad, ak aplikujete 200 libier\/aker dus\u00edka a dosiahnete zv\u00fd\u0161enie \u00farody kukurice o 50 bu\u0161lov, potom by va\u0161a agronomick\u00e1 NUE bola: 200 libier\/aker \/ 50 bu\u0161lov\/aker = 4 libry zrna na libru aplikovan\u00e9ho dus\u00edkat\u00e9ho hnojiva.<\/p>\n

Je to k\u013e\u00fa\u010dov\u00fd parameter na opis dus\u00edkovej (N) bilancie agroekosyst\u00e9mu. Preto sa m\u00f4\u017ee pou\u017ei\u0165 na hodnotenie udr\u017eate\u013enosti pestovate\u013esk\u00e9ho syst\u00e9mu a na usmernenie postupov hospod\u00e1renia s dus\u00edkom.<\/p>\n

Agronomick\u00e1 NUE je pomer medzi pr\u00edjmom dus\u00edka plodinou (pr\u00edjem N plodiny) a mno\u017estvom N aplikovan\u00e9ho na plodinu (N v hnojive + N v hnoji + Biologick\u00e1 fix\u00e1cia N). M\u00f4\u017ee sa vyjadri\u0165 ako: Agronomick\u00e1 NUE = Pr\u00edjem N plodiny \/ N v hnojive + N v hnoji + Biologick\u00e1 fix\u00e1cia N<\/p>\n

Napr\u00edklad, ak farm\u00e1r aplikuje 100 kg\/ha dus\u00edkov\u00e9ho hnojiva na p\u0161eni\u010dn\u00fa \u00farodu a pri zbere sa v zrne z\u00edska 30 kg\/ha dus\u00edku, potom AgronomicNUE = 0,30.<\/p>\n

Poskytuje mieru efekt\u00edvnosti v\u0161etk\u00fdch dostupn\u00fdch dus\u00edkat\u00fdch vstupov pri produkcii \u00farody plod\u00edn a z\u00e1rove\u0148 poskytuje prostriedok na porovn\u00e1vanie a kontrastovanie r\u00f4znych strat\u00e9gi\u00ed hospod\u00e1renia s dus\u00edkom.<\/p>\n

Agronomick\u00e1 NUE bola definovan\u00e1 ako pomer biomasy plodiny na jednotku mno\u017estva aplikovan\u00e9ho alebo z\u00edskan\u00e9ho dus\u00edka v hnojiv\u00e1ch alebo na celkov\u00e9 mno\u017estvo dus\u00edka fixovan\u00e9ho strukovinami.<\/p>\n

Agronomick\u00e1 NUE = Biomasa plodiny \/ Celkov\u00e9 rastlinn\u00e9 vstupy dus\u00edka<\/strong><\/em><\/p>\n

Ide o podiel aplikovan\u00e9ho dus\u00edka z hnojiva, ktor\u00fd sa v cie\u013eovej plodine sp\u00e4tne z\u00edska. Ide\u00e1lna \u00fa\u010dinnos\u0165, ktor\u00e1 sa dosahuje len zriedka, by bola 100%, \u010do znamen\u00e1, \u017ee v\u0161etok aplikovan\u00fd dus\u00edk sa v plodine sp\u00e4tne z\u00edska.<\/p>\n

Pojem agronomick\u00fd sa nevz\u0165ahuje na po\u013enohospod\u00e1rsku prax, ale na skuto\u010dn\u00e9 mno\u017estvo dus\u00edka, ktor\u00e9 plodina vyu\u017e\u00edva. Toto mno\u017estvo m\u00f4\u017ee by\u0165 men\u0161ie ako mno\u017estvo, ktor\u00e9 bolo skuto\u010dne aplikovan\u00e9 alebo dodan\u00e9, a m\u00f4\u017ee by\u0165 sp\u00f4soben\u00e9 r\u00f4znymi faktormi, ako s\u00fa straty vyl\u00fahovan\u00edm alebo denitrifik\u00e1ciou alebo imobiliz\u00e1cia dus\u00edka z hnoj\u00edv mikroorganizmami v p\u00f4de.<\/p>\n

D\u00f4le\u017eitos\u0165 NUE<\/h2>\n

Existuje nieko\u013eko d\u00f4vodov, pre\u010do je efekt\u00edvne vyu\u017e\u00edvanie dus\u00edka v p\u00f4de d\u00f4le\u017eit\u00e9. Tu s\u00fa niektor\u00e9 z nich:<\/p>\n

    \n
  1. Zni\u017euje ekonomick\u00e9 straty sp\u00f4soben\u00e9 n\u00edzkymi v\u00fdnosmi a zlou kvalitou.<\/li>\n
  2. Zlep\u0161uje udr\u017eate\u013en\u00e9 vyu\u017e\u00edvanie pr\u00edrodn\u00fdch zdrojov.<\/li>\n
  3. Zni\u017euje zne\u010distenie z dus\u00edkat\u00fdch hnoj\u00edv.<\/li>\n
  4. Ni\u017e\u0161ie n\u00e1klady s\u00fa spojen\u00e9 s aplik\u00e1ciou men\u0161ieho mno\u017estva dus\u00edkat\u00fdch hnoj\u00edv, ktor\u00e9 je st\u00e1le dostato\u010dn\u00e9 na dosiahnutie cie\u013eov\u00fdch v\u00fdnosov plod\u00edn.<\/li>\n
  5. Ni\u017e\u0161\u00ed vplyv na \u017eivotn\u00e9 prostredie, najm\u00e4 na kvalitu vody, v\u010faka zn\u00ed\u017een\u00e9mu vyplavovaniu a strat\u00e1m dus\u00edka odparovan\u00edm.<\/li>\n
  6. Vy\u0161\u0161\u00ed obsah bielkov\u00edn v obilnin\u00e1ch. To m\u00f4\u017ee zv\u00fd\u0161i\u0165 ekonomick\u00fa hodnotu obilia a zlep\u0161i\u0165 schopnos\u0165 zvierat premie\u0148a\u0165 krmivo na m\u00e4so alebo mlieko.<\/li>\n<\/ol>\n

    Ako vypo\u010d\u00edta\u0165 \u00fa\u010dinnos\u0165 vyu\u017eitia dus\u00edka<\/h2>\n

    NUE sa vypo\u010d\u00edta pomocou nasleduj\u00faceho vzorca:<\/p>\n

    Rovnicu pre NUE mo\u017eno n\u00e1js\u0165 vydelen\u00edm v\u00fdnosu zrna celkov\u00fdm mno\u017estvom dus\u00edka dostupn\u00e9ho pre plodinu.<\/p>\n

    g\/ha v\u00fdnos zrna (su\u0161ina plodiny) \u00f7 g\/ha aplikovan\u00e9ho dus\u00edka.<\/p>\n

    \"Ako<\/p>\n

    Napr\u00edklad, uva\u017eujme plodinu s v\u00fdnosom 3,5 t\/ha p\u0161enice s celkov\u00fdm obsahom dus\u00edka 0,24%. Nameran\u00e9 mno\u017estvo dus\u00edka v zrne je teda:<\/p>\n

    3,5 \u00d7 0,24% = 8,4 kg\/ha.<\/p>\n

    Ak bolo plodine dodan\u00fdch 100 kg\/ha dus\u00edka (vr\u00e1tane mineraliz\u00e1cie p\u00f4dy), potom je NUE plodiny 8,4%.<\/p>\n

    Ako zv\u00fd\u0161i\u0165 \u00fa\u010dinnos\u0165 vyu\u017eitia dus\u00edka<\/h2>\n

    Tu je nieko\u013eko sp\u00f4sobov, ako to m\u00f4\u017eu po\u013enohospod\u00e1ri vylep\u0161i\u0165:<\/p>\n

    1<\/strong>. M\u00f4\u017eete to zlep\u0161i\u0165 v\u00fdberom spr\u00e1vneho typu hnojiva. Organick\u00e9 hnojiv\u00e1<\/a> s\u00fa skvel\u00e9. Ke\u010f sa tieto organick\u00e9 hnojiv\u00e1 aplikuj\u00fa do p\u00f4dy, pomaly uvo\u013e\u0148uj\u00fa \u017eiviny pomocou mikr\u00f3bov pr\u00edtomn\u00fdch v p\u00f4de, a t\u00fdm zvy\u0161uj\u00fa NUE.<\/p>\n

    2<\/strong>. Pou\u017e\u00edvanie vhodn\u00fdch pestovate\u013esk\u00fdch met\u00f3d.<\/p>\n

    3<\/strong>. V\u00fdsadba vhodn\u00fdch odr\u00f4d.<\/p>\n

    4<\/strong>. Aplik\u00e1cia spr\u00e1vneho mno\u017estva hnojiva v spr\u00e1vnom \u010dase. Hnojivo by sa malo aplikova\u0165 pred sejbou alebo po\u010das sejby, kedyko\u013evek je to mo\u017en\u00e9, aby sa \u010do najviac neplytvalo plodinami.<\/p>\n

    5.<\/strong> D\u00e1 sa to zlep\u0161i\u0165 aj striedan\u00edm plod\u00edn a krycie plodiny<\/a>. Pri spolo\u010dnom pou\u017eit\u00ed m\u00f4\u017eu tieto postupy pom\u00f4c\u0165 zn\u00ed\u017ei\u0165 negat\u00edvne environment\u00e1lne vplyvy konven\u010dn\u00fdch po\u013enohospod\u00e1rskych postupov, pri ktor\u00fdch po\u013enohospod\u00e1ri aplikuj\u00fa nadmern\u00e9 mno\u017estvo dus\u00edka, aby zabezpe\u010dili, \u017ee v\u0161etky rastliny dostan\u00fa dostatok dus\u00edka.<\/p>\n

    Tradi\u010dn\u00fd pr\u00edstup aplik\u00e1cie dostato\u010dn\u00e9ho mno\u017estva dus\u00edka je n\u00e1kladn\u00fd a neefekt\u00edvny. Krycie plodiny a striedanie plod\u00edn m\u00f4\u017eu pom\u00f4c\u0165 zn\u00ed\u017ei\u0165 tieto n\u00e1klady zlep\u0161en\u00edm NUE na va\u0161ich poliach, \u010do znamen\u00e1, \u017ee budete m\u00f4c\u0165 produkova\u0165 viac s men\u0161ou aplik\u00e1ciou dus\u00edkat\u00fdch hnoj\u00edv.<\/p>\n

    Pokia\u013e ide o striedanie plod\u00edn, nezabudnite, \u017ee nie v\u0161etky striedania s\u00fa rovnak\u00e9. Niektor\u00e9 striedania m\u00f4\u017eu zn\u00ed\u017ei\u0165 NUE v porovnan\u00ed s priamou rot\u00e1ciou kukurice a s\u00f3je. Napr\u00edklad, v\u00fdsadba kukurice po s\u00f3ji vo v\u0161eobecnosti zlep\u0161\u00ed NUE v porovnan\u00ed so v\u00fdsadbou s\u00f3je po kukurici.<\/p>\n

    Uk\u00e1zalo sa, \u017ee krycie plodiny zvy\u0161uj\u00fa NUE, preto\u017ee absorbuj\u00fa dus\u00edk z p\u00f4dy; tento proces je zn\u00e1my ako imobiliz\u00e1cia. Imobiliz\u00e1cia dus\u00edka nast\u00e1va, ke\u010f mikroorganizmy vyu\u017e\u00edvaj\u00fa organick\u00e9 zdroje dus\u00edka v p\u00f4de a premie\u0148aj\u00fa ich na nov\u00e9 \u017eiv\u00e9 tkanivo (mikroorganizmy).<\/p>\n

    Mikroorganizmy potom uhyn\u00fa a uvo\u013enia tento organick\u00fd dus\u00edk sp\u00e4\u0165 do p\u00f4dy, aby ho rastliny mohli vyu\u017ei\u0165. Krycie plodiny si v\u0161ak vy\u017eaduj\u00fa starostlivos\u0165 vr\u00e1tane spr\u00e1vnych met\u00f3d a term\u00ednov ukon\u010denia pestovania.<\/p>\n

    Ako m\u00f4\u017ee GeoPard pom\u00f4c\u0165 zv\u00fd\u0161i\u0165 efekt\u00edvnos\u0165 vyu\u017e\u00edvania dus\u00edka?<\/h2>\n

    GeoPard je rie\u0161enie prec\u00edzneho po\u013enohospod\u00e1rstva<\/a> ktor\u00fd poskytuje po\u013enohospod\u00e1rom potrebn\u00e9 \u00fadaje a inform\u00e1cie na efekt\u00edvnej\u0161iu produkciu plod\u00edn. GeoPard poskytuje preh\u013ead o potenci\u00e1li v\u00fdnosu ka\u017ed\u00e9ho po\u013ea a stave dus\u00edka, drasl\u00edka a fosforu v p\u00f4de \u0161pecifick\u00fd pre dan\u00fa rastlinu. Ni\u017e\u0161ie s\u00fa uveden\u00e9 sp\u00f4soby, ak\u00fdmi GeoPard pom\u00e1ha tento potenci\u00e1l zv\u00fd\u0161i\u0165:<\/p>\n

    1. Poskytuj\u00fa kompletn\u00fd cyklus v\u00fdpo\u010dtu (ko\u013eko dus\u00edka je u\u017e v p\u00f4de, ko\u013eko by sa malo prida\u0165, ko\u013eko zost\u00e1va na konci sez\u00f3ny) a pl\u00e1nuj\u00fa na \u010fal\u0161iu sez\u00f3nu.<\/strong><\/p>\n

    GeoPard pom\u00e1ha zvy\u0161ova\u0165 NUE (neutr\u00e1lnu energetick\u00fa \u00fa\u010dinnos\u0165) poskytovan\u00edm presn\u00fdch odpor\u00fa\u010dan\u00ed o tom, ko\u013eko hnoj\u00edv aplikova\u0165 a kedy ich aplikova\u0165. Pom\u00e1ha po\u013enohospod\u00e1rom zn\u00ed\u017ei\u0165 mno\u017estvo aplikovan\u00e9ho hnojiva bez ovplyvnenia v\u00fdnosu plod\u00edn. To znamen\u00e1, \u017ee po\u013enohospod\u00e1ri min\u00fa menej pe\u0148az\u00ed na hnojiv\u00e1 a z\u00e1rove\u0148 zn\u00ed\u017eia svoj vplyv na \u017eivotn\u00e9 prostredie.<\/p>\n

    GeoPard odpor\u00fa\u010da presn\u00e9 mno\u017estv\u00e1 hnoj\u00edv, ktor\u00e9 by sa mali aplikova\u0165, na z\u00e1klade charakterist\u00edk p\u00f4dy, historick\u00fdch \u00fadajov o po\u010das\u00ed (na odhad mno\u017estva vody, ktor\u00e1 sa strat\u00ed evapotranspir\u00e1ciou) a aktu\u00e1lnych \u00fadajov o po\u010das\u00ed (ktor\u00e9 mo\u017eno pou\u017ei\u0165 na predpovedanie, kedy sa objav\u00ed vhodn\u00e9 obdobie na aplik\u00e1ciu odpor\u00fa\u010dan\u00e9ho mno\u017estva).<\/p>\n

    2. Robia anal\u00fdzy na z\u00e1klade infografiky (\u00fadaje zo strojov (aplikovan\u00e9 hnojenie, v\u00fdsadba, v\u00fdnos, bielkoviny)<\/strong><\/p>\n

    Najd\u00f4le\u017eitej\u0161\u00edm aspektom syst\u00e9mu GeoPard je jeho schopnos\u0165 analyzova\u0165 inform\u00e1cie u\u017e\u00edvate\u013esky pr\u00edvetiv\u00fdm sp\u00f4sobom. Tento syst\u00e9m poskytuje \u00fadaje \u013eahko zrozumite\u013en\u00fdm sp\u00f4sobom, \u010do umo\u017e\u0148uje lep\u0161ie rozhodnutia v bud\u00facnosti. Inform\u00e1cie, ktor\u00e9 GeoPard zhroma\u017e\u010fuje, zah\u0155\u0148aj\u00fa nasledovn\u00e9: aplikovan\u00e9 hnojenie, v\u00fdsadbu, v\u00fdnos a bielkoviny.<\/p>\n

    Tieto inform\u00e1cie sa zhroma\u017e\u010fuj\u00fa pomocou strojov a jednoduch\u00fdm postupom, \u010d\u00edm sa farm\u00e1rovi poskytuj\u00fa v\u0161etky najd\u00f4le\u017eitej\u0161ie \u00fadaje na jednom mieste. \u00dadaje sa potom m\u00f4\u017eu pou\u017ei\u0165 na pomoc pri d\u00f4le\u017eit\u00fdch rozhodnutiach o tom, \u010do je potrebn\u00e9 urobi\u0165 pre zlep\u0161enie efekt\u00edvnosti vyu\u017e\u00edvania dus\u00edka na jeho farme.<\/p>\n

    3. Poskytuj\u00fa analytick\u00e9 \u00fadaje (rovnice na v\u00fdpo\u010det pr\u00edjmu dus\u00edka na ka\u017ed\u00fd meter \u0161tvorcov\u00fd)<\/strong><\/p>\n

    Jednou z hlavn\u00fdch v\u00fdhod syst\u00e9mu GeoPard Crop Management System je, \u017ee poskytuje pestovate\u013eom efekt\u00edvny n\u00e1stroj na pochopenie a anal\u00fdzu rastu plod\u00edn. Syst\u00e9m GeoPard Crop Management System vyu\u017e\u00edva pokro\u010dil\u00fa analytiku, ktor\u00e1 pom\u00e1ha pestovate\u013eom s ich NUE (nutri\u010dne efekt\u00edvnou energetickou \u00fa\u010dinnos\u0165ou).<\/p>\n

    Syst\u00e9m poskytuje analytick\u00e9 \u00fadaje pre ka\u017ed\u00fd \u0161tvorcov\u00fd meter, \u010do umo\u017e\u0148uje pestovate\u013eom pochopi\u0165 po\u017eadovan\u00e9 mno\u017estvo dus\u00edka potrebn\u00e9ho pre ka\u017ed\u00fa plochu. Pomocou t\u00fdchto inform\u00e1ci\u00ed sa pestovatelia m\u00f4\u017eu vyhn\u00fa\u0165 nadmern\u00e9mu hnojeniu a u\u0161etri\u0165 peniaze minimaliz\u00e1ciou n\u00e1kladov na hnojiv\u00e1.<\/p>\n

    Analytick\u00e9 \u00fadaje s\u00fa poskytovan\u00e9 v jednoduchej forme: rovnice, ktor\u00e9 v\u00e1m hovoria, ko\u013eko dus\u00edka potrebujete na ka\u017ed\u00fd meter \u0161tvorcov\u00fd.<\/p>\n

    4. Vytv\u00e1raj\u00fa agronomick\u00e9 pl\u00e1novanie na nasleduj\u00facu sez\u00f3nu na z\u00e1klade presn\u00fdch \u00fadajov a modelovania GeoPard.<\/strong><\/p>\n

    GeoPard v\u00e1m poskytuje d\u00f4le\u017eit\u00e9 inform\u00e1cie o ka\u017edej \u010dasti po\u013ea a mapuje oblasti, kde je dus\u00edk najviac potrebn\u00fd. Na z\u00e1klade t\u00fdchto inform\u00e1ci\u00ed m\u00f4\u017eu pestovatelia pl\u00e1nova\u0165 mno\u017estvo hnoj\u00edv, ktor\u00e9 sa maj\u00fa aplikova\u0165 v konkr\u00e9tnych \u010dastiach po\u013ea, \u010do \u0161etr\u00ed \u010das, peniaze a zdroje.<\/p>\n

    Je to pomer pr\u00edjmu dus\u00edka plodinou k mno\u017estvu aplikovan\u00e9ho dus\u00edka. Je hlavn\u00fdm ur\u010duj\u00facim faktorom produktivity a ziskovosti plod\u00edn a d\u00f4le\u017eit\u00fdm ukazovate\u013eom udr\u017eate\u013en\u00fdch po\u013enohospod\u00e1rskych postupov.<\/p>\n

    \u010c\u00edm menej dus\u00edka plodina spotrebuje, t\u00fdm efekt\u00edvnej\u0161iu mo\u017eno pova\u017eova\u0165. Okrem toho je NUE ovplyvnen\u00e1 mnoh\u00fdmi faktormi vr\u00e1tane vlastnost\u00ed p\u00f4dy, postupov hospod\u00e1renia a podmienok prostredia.<\/p>\n

    \n

    \u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
    \n

    1. Ak\u00e9 s\u00fa v\u00fdhody zv\u00fd\u0161enia efekt\u00edvnosti vyu\u017e\u00edvania dus\u00edka?<\/strong><\/p>\n

    Jeho zvy\u0161ovanie prin\u00e1\u0161a nieko\u013eko v\u00fdhod. Zvy\u0161uje produktivitu plod\u00edn, zni\u017euje vplyv na \u017eivotn\u00e9 prostredie, \u0161etr\u00ed n\u00e1klady a podporuje udr\u017eate\u013en\u00e9 po\u013enohospod\u00e1rstvo.<\/p>\n

    Efekt\u00edvne vyu\u017e\u00edvanie dus\u00edka zabezpe\u010duje optim\u00e1lny rast rastl\u00edn, minimalizuje odtok dus\u00edka a emisie sklen\u00edkov\u00fdch plynov, zni\u017euje vstupn\u00e9 n\u00e1klady a podporuje dlhodob\u00fa \u00farodnos\u0165 p\u00f4dy. Jeho uprednost\u0148ovan\u00edm m\u00f4\u017eu po\u013enohospod\u00e1ri dosiahnu\u0165 lep\u0161ie v\u00fdnosy, chr\u00e1ni\u0165 \u017eivotn\u00e9 prostredie, u\u0161etri\u0165 peniaze a prispie\u0165 k udr\u017eate\u013en\u00fdm po\u013enohospod\u00e1rskym postupom.<\/p>\n

    2. Ko\u013eko hnojiva na meter \u0161tvorcov\u00fd?<\/strong><\/p>\n

    Mno\u017estvo hnojiva na meter \u0161tvorcov\u00fd sa l\u00ed\u0161i v z\u00e1vislosti od plodiny, p\u00f4dnych podmienok a po\u017eiadaviek na \u017eiviny. Najlep\u0161ie je vykona\u0165 test p\u00f4dy, aby sa ur\u010dili konkr\u00e9tne odpor\u00fa\u010dania pre hnojivo pre optim\u00e1lny rast rastl\u00edn. Testovanie p\u00f4dy poskytuje presn\u00e9 inform\u00e1cie na ur\u010denie spr\u00e1vneho mno\u017estva hnojiva, ktor\u00e9 sa m\u00e1 aplikova\u0165 na meter \u0161tvorcov\u00fd, \u010d\u00edm sa zabezpe\u010d\u00ed efekt\u00edvne z\u00e1sobovanie rastl\u00edn \u017eivinami.<\/p>\n

    3. Ak\u00e9 s\u00fa dve strat\u00e9gie na zv\u00fd\u0161enie efekt\u00edvnosti vyu\u017e\u00edvania dus\u00edka?<\/strong><\/p>\n

    Existuj\u00fa dve \u00fa\u010dinn\u00e9 strat\u00e9gie na zv\u00fd\u0161enie NUE:<\/p>\n

      \n
    • Rozdelen\u00e1 aplik\u00e1cia<\/strong>Rozdelenie aplik\u00e1cie dus\u00edkat\u00fdch hnoj\u00edv do viacer\u00fdch d\u00e1vok po\u010das vegeta\u010dn\u00e9ho obdobia umo\u017e\u0148uje lep\u0161iu synchroniz\u00e1ciu medzi dopytom rastl\u00edn a dostupnos\u0165ou \u017eiv\u00edn. Tento pr\u00edstup minimalizuje straty dus\u00edka a zabezpe\u010duje, \u017ee rastliny dostan\u00fa dus\u00edk, ke\u010f ho najviac potrebuj\u00fa.<\/li>\n
    • Vylep\u0161en\u00e9 riadenie \u017eiv\u00edn<\/strong>Zav\u00e1dzanie presn\u00fdch postupov riadenia \u017eiv\u00edn, ako je napr\u00edklad pou\u017e\u00edvanie aplika\u010dn\u00fdch techn\u00edk \u0161pecifick\u00fdch pre dan\u00e9 miesto a \u00faprava d\u00e1vok hnoj\u00edv na z\u00e1klade potrieb p\u00f4dy a rastl\u00edn, m\u00f4\u017ee t\u00fato situ\u00e1ciu v\u00fdrazne zlep\u0161i\u0165. Prisp\u00f4soben\u00edm vstupov \u017eiv\u00edn konkr\u00e9tnym oblastiam alebo z\u00f3nam v r\u00e1mci po\u013ea m\u00f4\u017eu po\u013enohospod\u00e1ri optimalizova\u0165 pou\u017e\u00edvanie hnoj\u00edv a minimalizova\u0165 plytvanie \u017eivinami.<\/li>\n<\/ul>\n

      Tieto strat\u00e9gie prispievaj\u00fa k maximaliz\u00e1cii \u00fa\u010dinnosti dus\u00edkat\u00fdch hnoj\u00edv, zni\u017eovaniu vplyvov na \u017eivotn\u00e9 prostredie a zlep\u0161ovaniu v\u00fdnosov plod\u00edn pri zachovan\u00ed udr\u017eate\u013en\u00fdch po\u013enohospod\u00e1rskych postupov.<\/p>\n

      4. Ktor\u00e1 plodina je najefekt\u00edvnej\u0161\u00edm u\u017e\u00edvate\u013eom dus\u00edka?<\/strong><\/p>\n

      Spomedzi r\u00f4znych plod\u00edn sa strukoviny pova\u017euj\u00fa za najefekt\u00edvnej\u0161\u00edch u\u017e\u00edvate\u013eov dus\u00edka. Strukoviny, ako je s\u00f3ja, hrach a \u0161o\u0161ovica, maj\u00fa jedine\u010dn\u00fa schopnos\u0165 vytv\u00e1ra\u0165 symbiotick\u00fd vz\u0165ah s bakt\u00e9riami fixuj\u00facimi dus\u00edk v ich kore\u0148ov\u00fdch uzl\u00edkoch.<\/p>\n

      To im umo\u017e\u0148uje z\u00edskava\u0165 dus\u00edk priamo z atmosf\u00e9ry, \u010d\u00edm sa zni\u017euje ich z\u00e1vislos\u0165 od vonkaj\u0161\u00edch zdrojov dus\u00edka, ako s\u00fa hnojiv\u00e1. V\u010faka tomu maj\u00fa strukoviny vy\u0161\u0161iu \u00fa\u010dinnos\u0165 vyu\u017e\u00edvania dus\u00edka a m\u00f4\u017eu prispieva\u0165 dus\u00edkom do p\u00f4dy, \u010do prospieva n\u00e1sledn\u00fdm plodin\u00e1m v syst\u00e9me rot\u00e1cie.<\/p>\n

      5. Ko\u013eko dus\u00edka potrebuje p\u0161enica na aker?<\/strong><\/p>\n

      Potreba dus\u00edka p\u0161enice na aker sa l\u00ed\u0161i v z\u00e1vislosti od nieko\u013ek\u00fdch faktorov vr\u00e1tane \u00farodnosti p\u00f4dy, podmienok prostredia a \u0161pecifick\u00e9ho \u0161t\u00e1dia rastu p\u0161enice. V priemere p\u0161enica zvy\u010dajne potrebuje pribli\u017ene 100 a\u017e 150 libier dus\u00edka na aker.<\/p>\n

      6. Ko\u013eko vody potrebuje p\u0161enica na aker?<\/strong><\/p>\n

      Potreba vody pre p\u0161enicu na aker z\u00e1vis\u00ed od r\u00f4znych faktorov vr\u00e1tane podnebia, typu p\u00f4dy a \u0161t\u00e1dia rastu plodiny. P\u0161enica v priemere potrebuje po\u010das vegeta\u010dn\u00e9ho obdobia pribli\u017ene 50 a\u017e 76 centimetrov vody. Je v\u0161ak nevyhnutn\u00e9 zv\u00e1\u017ei\u0165 \u0161pecifick\u00e9 potreby vody pestovanej odrody p\u0161enice a pravidelne monitorova\u0165 \u00farove\u0148 vlhkosti p\u00f4dy.<\/p>\n

      7. Ko\u013eko hnojiva na aker pre p\u0161enicu?<\/strong><\/p>\n

      Vo v\u0161eobecnosti p\u0161enica zvy\u010dajne potrebuje pribli\u017ene 100 a\u017e 150 libier dus\u00edka na aker. Potreba fosforu a drasl\u00edka sa l\u00ed\u0161i v z\u00e1vislosti od v\u00fdsledkov testov p\u00f4dy, ale be\u017en\u00fdm odpor\u00fa\u010dan\u00edm je aplikova\u0165 pribli\u017ene 50 a\u017e 80 libier fosforu a 40 a\u017e 60 libier drasl\u00edka na aker.<\/p>","protected":false},"excerpt":{"rendered":"

      Efekt\u00edvnos\u0165 vyu\u017e\u00edvania dus\u00edka je u\u017e desa\u0165ro\u010dia \u0161iroko pou\u017e\u00edvan\u00fdm konceptom v po\u013enohospod\u00e1rskom v\u00fdskume. NUE sa \u010dasto opisuje ako pomer v\u00fdnosu plodiny k\u2026<\/p>","protected":false},"author":210157960,"featured_media":4790,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_eb_attr":"","content-type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"{title}\n\n{excerpt}\n\n{url}","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"_wpas_customize_per_network":false,"jetpack_post_was_ever_published":false},"categories":[1380],"tags":[1637],"class_list":["post-4788","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-whats","tag-plant-protection"],"acf":[],"yoast_head":"\nWhat is agronomic nitrogen use efficiency?\ud83c\udf8d<\/title>\n<meta name=\"description\" content=\"Nitrogen use efficiency (NUE) is ratio of crop nitrogen uptake to the amount of nitrogen applied. 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