Izucheno vliyanie sroka posadki i glubiny zadelki semennogo materiala na urozhaynost' i kachestvo klubney kar- tofelya. V period issledovaniy urozhaynost' kartofelya glavnym obrazom zavisela ot urovnya mineral'nogo pitaniya (vklad faktora – 58,7 %), sorta (10,5 %), gustoty (20,0 %) i sroka posadki (7,5 %). Glubina zadelki semennogo ma- teriala okazyvala dostovernoe, no znachitel'no men'shee vliyanie (0,5 %). Soderzhanie v klubnyah suhogo veschestva i krahmala opredelyalos' srokom posadki (63,2 i 50,5 % sootvetstvenno), urovnem pitaniya (20,5 i 33,4 %) i genotipom (5,1 i 9,3 %), v men'shey stepeni zaviselo ot glubiny posadki (0,8 i 2,1 %). Nakoplenie nitratov v klubnyah kartofelya zaviselo ot sroka posadki (57,7 %), sorta (17,4 %), urovnya pitaniya (12,4 %) i gustoty posadki (2,8 %). Ustanovlen optimal'nyy agrotehnicheskiy srok posadki kartofelya – vtoraya dekada maya. Posadka v tret'ey dekade maya snizhala soderzhanie v klubnyah suhogo veschestva («Rozara» – v srednem na 1,7 %, «Kuzovok» – na 1,3 %) i krahmala («Rozara» – na 1,60 %, «Kuzovok» – na 1,26 %), togda kak nakoplenie nitratov uvelichivalos' v 1,26 i 1,52 raza sootvetstvenno. Pozdnyaya posadka (5–12 iyunya) privodila k snizheniyu kak urozhaynosti kartofelya («Rozara» – na 11,3 %, «Kuzovok» – na 15,1 %), tak i soderzhaniya v klubnyah suhogo veschestva (na 2,7 i 2,9 %) i krahmala (na 1,87 i 2,11 % sootvetstvenno) po sravneniyu s posadkoy 12–15 maya, togda kak soderzhanie v klubnyah nitratov, naoborot, uvelichivalos' v 2,05 i 2,19 raza. Optimal'naya glubina zadelki semennyh klubney zavisela ot sroka posadki. Pri posadke kartofelya vo vtoroy dekade maya dostovernoe preimuschestvo imela zadelka klubney na glubinu 5–6 sm, a pri posadke konce maya i nachale iyunya – na glubinu 10–12 sm.
kartofel', srok posadki, glubina posadki, urozhaynost', kachestvo klubney, suhoe veschestvo, krahmal, nitraty.
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