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  Search result  Your search for [author]Riyanto, 1938- returned 3 records.  
 
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  Visual Material Interaction of rate and time of nitrogen application and weed control methods in upland rice [microform].

by Riyanto, 1938-; Quezon City: Photoduplication Service. University of the Philippines Library, 1980.

Subject: Rice -- Philippines -- Weed control.

  
     
Relevance: 17.30%
 
     
  Book Interaction of rate and time of nitrogen application and weed control methods in upland rice.

by Riyanto, 1938-;

Subject: Rice -- Philippines -- Weed control.

  
     
Relevance: 17.30%
 
     
  Book The effect of tillage method and nitrogen rate on some soil properties and corn response.

by Riyanto, 1938-;

Subject: Tillage; Corn -- Soils; Soils -- Nitrogen content.

  
     
Relevance: 17.30%
 
     
 
         
         
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