A Long-Term Rotational and Manurial Trial in Uganda
1976 ◽
Vol 12
(3)
◽
pp. 305-317
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Keyword(s):
Mean yields and average trends with time are given for cotton, finger millet and groundnuts grown in a rotational experiment during the period 1936–64. The experiment, which ran for five cycles, involved a five-year rotation with three different resting periods, five types of resting cover, and farmyard manure at three levels. Yield trends differed from crop to crop, and a critical level of total soil nitrogen is suggested in partial explanation. Responses to farmyard manure in most crops increased over die years, with increasingly marked negative curvature in a pattern that showed most strongly in cotton crops immediately following the application of manure.
1962 ◽
Vol 26
(2)
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pp. 200-202
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2017 ◽
Vol 12
(Special-6)
◽
pp. 1475-1483
Keyword(s):
2012 ◽
Vol 118
◽
pp. 32-39
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Keyword(s):
1967 ◽
Vol 7
(24)
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pp. 66
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Keyword(s):
1974 ◽
Vol 14
(66)
◽
pp. 49
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Keyword(s):
1980 ◽
Vol 20
(103)
◽
pp. 220
◽
Keyword(s):
Keyword(s):