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ThesisItem Open Access Blocking in Partial Diallel Crosses Through Circular Designs(College of Basic Sciences and Humanities Chaudhary Charan Singh Haryana Agricultural University Hisar, 2003) Yadav, Suman; Aneja, D. R.ThesisItem Open Access A study of cattle population growth: an age dependent model(College of Basic Sciences and Humanities Chaudhary Charan Singh Haryana Agricultural University Hisar, 2003) Suman; Batra, S. DThesisItem Open Access Some Contributions to Balanced Bipartite Row-Column Designs(College of Basic Sciences and Humanities Chaudhary Charan Singh Haryana Agricultural University Hisar, 2002) Singh, Satyender; Mehta, B.DThesisItem Open Access A study on drought incidence at Hisar - Markov chain approach(College of Basic Sciences and Humanities Chaudhary Charan Singh Haryana Agricultural University Hisar, 2001) Bhattacharayya, Sandipan; Saxena, K. KThesisItem Open Access Standardisation of Methods and Time of Budding in Aonla(College of Basic Sciences and Humanities Chaudhary Charan Singh Haryana Agricultural University Hisar, 2003) Singh, Bhoopendra Kuamr; Sharma, SuneelThesisItem Open Access Allelopathic Studies in Citrus(College of Agriculture Chaudhary Charan Singh Haryana Agricultural University Hisar, 2001) Bhan, Suraj; Arora, R. KThesisItem Open Access Estimation of Credit Gap in Irdp Area of hisar District (Haryana)(College of Agriculture Chaudhary Charan Singh Haryana Agricultural University Hisar, 2003) Singh, Invinder Paul; Guliani, SSThesisItem Open Access Evaluation of fertilizer yield response models(CCSHAU, 2006) Suman Kumar; Rajendra SinghJudicious use of fertilizer form one of the most important means of stepping up agricultural production. For many cropping situation, especially in developing countries some models do not fit the responses of certain crops to fertilizer. Performance of quadratic, square root, inverse quadratic and modified quadratic response functions have been examined on major food crops grown in Haryana. Based on R2 criterion, inverse quadratic model gives better fit to Pearlmillet crop, where as quadratic function describes the yield-fertilizer relationship in Rice crop. It has been observed that a modified quadratic function is better suited when data shows initial sharp rise at lower levels of fertilizer application. Fertilizer yield data of wheat is often available of many varieties and/or for a numbers of years. Dummy variables have used for combining data for different varieties and over years and for testing structural stability of quadratic response function for three varieties; HD2329,WH542 and WH533 of wheat crop grown in Haryana. Models for individuals varieties have also been deduced from the pooled regression. A comparative study of quadratic, square root, inverse bilinear, and cobb-douglas response models used for the two nutrients experiment. The canonical form is also performed for quadratic and square root models. The characteristic roots of real symmetric matrix of estimates are measured for the coefficients of quadratic and interaction terms. Based on characteristic roots and R2, square root model give better fit for wheat crop.ThesisItem Open Access Evaluation of fertilizer yield response models(CCSHAU, 2005) Suman Kumar; Rajendra SinghJudicious use of fertilizer form one of the most important means of stepping up agricultural production. For many cropping situation, especially in developing countries some models do not fit the responses of certain crops to fertilizer. v Performance of quadratic, square root, inverse quadratic and modified quadratic response functions have been examined on major food crops grown in Haryana. Based on R2 criterion, inverse quadratic model gives better fit to Pearlmillet crop, where as quadratic function describes the yield-fertilizer relationship in Rice crop. It has been observed that a modified quadratic function is better suited when data shows initial sharp rise at lower levels of fertilizer application. Fertilizer yield data of wheat is often available of many varieties and/or for a numbers of years. Dummy variables have used for combining data for different varieties and over years and for testing structural stability of quadratic response function for three varieties; HD2329,WH542 and WH533 of wheat crop grown in Haryana. Models for individuals varieties have also been deduced from the pooled regression. A comparative study of quadratic, square root, inverse bilinear, and cobb-douglas response models used for the two nutrients experiment. The canonical form is also performed for quadratic and square root models. The characteristic roots of real symmetric matrix of estimates are measured for the coefficients of quadratic and interaction terms. Based on characteristic roots and R2, square root model give better fit for wheat crop.
