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131
Effects of different light intensities, nitrogen levels and population densities on grain sorghum [microform].
Argitaratua 1977Visual Material -
132
Interaction between soil moisture regime and nitrogen level in upland rice [microform].
Argitaratua 1977Visual Material -
133
Fertilizer response of rice under varying environment and management practices [microform].
Argitaratua 1977Visual Material -
134
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135
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136
Nitrogen availability in five soils under different management systems and its effects on growth and yield of rice [microform]
Argitaratua 1976Visual Material -
137
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138
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139
Efficiency of some nitrogen sources and their effects on lowland rice [microform]
Argitaratua 1975Visual Material -
140
Response of rice to different nitrogen fertilizers and times of application [microform]
Argitaratua 1975Visual Material
