000 00595nab|a22002177a|4500
999 _c61541
001 61541
003 MX-TxCIM
005 20200327181659.0
008 200325s1976||||xxu|||p|op||||00||0|eng|d
022 _a0002-1962
022 _a1435-0645 (Online)
024 8 _ahttps://doi.org/10.2134/agronj1976.00021962006800050033x
040 _aMX-TxCIM
041 _aeng
100 1 _aDaigger, L.A.
245 1 0 _aNitrogen content of winter wheat during growth and maturation
260 _aMadison, WI (USA) :
500 _aPeer review
520 _aPreliminary studies showed that winter wheat (Triticum aestivum L.) was losing relatively large amounts of N during the grain formation growth period. In order to further document this N loss, winter wheat plants were sampled at different times and at different locations before and after anthesis until maturity. The objective was to determine the nature and extent of dry matter and N losses that occur during the later stages of wheat development as influenced by N fertilization. While N is translocated rapidly from other plant parts to the grain after anthesis, total N losses ranged from 25 to 80 kg ha−1 in different experiments. These losses occurred during the grain filling period after anthesis. Dry matter and N losses were attributed primarily to the stems where 83 to 87% of dry matter losses occurred and 73 to 75% of the N. Dry matter and N losses from leaves and roots were relatively small. The N losses increased with increasing rates of N application. Plant N losses could account for much of the N losses found in soil N balance studies and certainly influence calculations involving fertilizer N efficiency. Grain protein could be doubled if plant N losses could be translocated instead into the grain.
546 _aText in English
591 _aChipindu, L. : Not in IRS Staff list but CIMMYT Affiliation
650 7 _2AGROVOC
650 7 _2AGROVOC
_aWinter wheat
650 7 _2AGROVOC
650 7 _2AGROVOC
700 1 _aSander, D.H.
700 1 _aPeterson, G.A.
773 0 _tAgronomy Journal
_gv. 68, no. 5, p. 815-818
_dMadison, WI (USA) : ASA, 1976.
942 _cJA