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  1. 121
    Thesis

    Influence of nitrogen and plant spacing on the yield components of non-photoperiod sensitive rice varieties
  2. 122
    by Alcasid, Godofredo N.
    Published 1969
    Book

    An economic analysis of the efficiency of the nitrogen fertilizer in rice production
  3. 123
    by Alferez, Arturo Carino 1940-
    Published 1968
    Thesis

    The influence of irrigation and nitrogen on dry seed yield and germinability of four vegetable legumes harvested at different stages of maturity
  4. 124
    by Hunt, J.L
    Published 1967
    Book

    Fertilizers and farm chemicals
  5. 125
    by Melodia, Fortunato S. 1931-
    Published 1966
    Thesis

    The effect of rate and timing of nitrogen application with and without phosphorous on the performance of rice in Maapag clay loam
  6. 126
    Published 1966
    Book

    Statistics of crop responses to fertilizers.
  7. 127
    by Orara, Lourdes G. 1937-
    Published 1961
    Thesis

    Combination of estimates of responses to fertilizers from 72 field experiments on palay
  8. 128
    Published 1961
    Book

    Gumamit ng pataba at apog.
  9. 129
    Book

    Commercial fertilizers their sources and use.
  10. 130
    Published 1947
    Book

    Food at the grass roots; the Nation's stake in soil minerals.
  11. 131
    by Miles, Ivan E.
    Published 1931
    Book

    A report on fertilizer distribution in the Philippines
  12. 132
    by Worthen, Edmund Louis 1882-
    Published 1927
    Book

    Farm soils, their management and fertilization
  13. 133
    Book

    Response of peanut cultivar CES 101 to calcium, nitrogen,and plant population density
  14. 134
    Book

    Effect of pH on the growth of rhizobia and nitrogen fixation in some rhizsobium-legume associations
  15. 135
    Book

    Interaction between soil moisture regime and nitrogen level in upland rice
  16. 136
    Book

    Studies on sulfur nutrition of rice plant
  17. 137
    Book

    Utilization of ricehull and sawdust as components of vegetables growing media
  18. 138
    Book

    N P K nutrition of sugarcane
  19. 139
    Book

    Fertilizers response of sugarcane under varying environment and management practices
  20. 140
    Book

    The effect of different levels of potassium and magnesium application on the nutrient content and yield of cotton
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