N.J. The Determination of Potentially Available Nitrogen in 



SoilsV (l) Develop a rapid chemical method for learning poten- 

 tially available N in soilsj (2) test method by soil nitrifica- 

 tion studies conducted under lab. conditions, & by plant growth 

 studies in potted soils in greenhouse; and (3) calibrate method 

 for use on field soils by field experiments with applied N salts 

 on com & wheat. 

 Soils 627 



N.J. Spectrochemical Analysis of Soils. To develop methods for 



spectrochemical analysis of soils, and apply such methods to 

 existing problems in the soils field. 

 Soils 629 



N.J. Correlation of Results of Soil Tests for Mg. P. and K 



With Plant Growth Response, (l) Measxire crop responses to 

 varying established levels of Mg, P, and K; and to additions 

 of Mg, P, and K fertilizers at existing varied soil levels of 

 these elements; relate soil characteristics to soil test re- 

 sults and to crop response to Mg, P, and K amendments; and 

 (2) increase reliability of soil test by examination of lab. 

 procedures in view of results obtained in (l) above. 

 Soils 630 



N.Y. A Study of the Relation Between Some of the Physico- 



(Comell) Chemical Properties of New York Soils and Their Response to 

 Fertilization . To study, in a thorough, fundamental way, 

 the conditions under which the more important soil types 

 of New York give a profitable return from the application 

 of fertilizers, and to adapt and develop sufficiently rapid 

 and reliable chemical methods that can be used for the 

 estimation of the fertilizer needs of soils. 

 Agron. 44 



N.Y. Leaf and Soil Analyses in the Diagnosis of Fertilizer 



(Cornell) Problems of Fruit Plants. Make a critical evaluation of chemi- 

 cal analyses of leaf and soil samples as a basis for diagnosis, 

 and prediction of fertilizer needs of individual fruit plant- 

 ings of New York. Take leaf and soil samples and observations 

 from apple, sour cherry, peach orchards and from grape vineyards, 

 Obtain similar information from representative sweet cherry, 

 pear, quince, currant, strawberry, and raspberry plantings. 

 Each year take leaf and soil samples from identical locations 

 by a standard procedure and analyzed for N, K, P, Ca and Mg, 

 and in some cases for B, Mn and other minor elements. 

 Pomol. 194 



N. Dak. Laboratory Tests for Soil Phosphorus in Relation to the 

 Response of Field Crops to Phosphorus Fertilization. To (l) 

 relate results of lab tests for soil phosphorus to response of 

 crops upon phosphorus fertilization; and (2) devise tests by 

 which to characterize capacity of various soils to furnish 

 phosphorus to farm crops. 

 Soils 15-2 



