ThiNganHang Sách - Tài liệu thi tuyển
30 câu trắc nghiệm Quản trị nguồn nhân lực (Có Đáp án)
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Preface xiii
Foreword xv
1 Introduction 1
2 Microbes as biofertilizers, their types and importance 7
2.1 What are biofertilizers? 7
2.2 Types of biofertilizers 7
2.2.1 Nitrogen-fixing biofertilizers 8
2.2.2 Phosphate solubilizing biofertilizers 39
2.2.3 Vesicular arbascular mycorrhizae 43
2.2.4 Potassium solubilizing biofertilizer 46
2.2.5 Sulfur oxidizing biofertilizer 50
2.2.6 Silicate solubilizing biofertilizer 54
2.2.7 Silica solubilizing bacillus sp. 58
2.2.8 Decomposting cultures 59
3 Rhizobium 63
3.1 Introduction 63
3.2 Isolation of Rhizobium63
3.2.1 Materials 64
3.2.2 Procedure 65
3.2.3 Observations 66
3.3 Cultural tests to distinguish Rhizobia from contaminants 67
3.4 Estimation of ‘N’ fixing effi ciency of
Rhizobium cultures 68
3.4.1 Apparatus 69
3.4.2 Procedure 70
3.4.3 Calculation 70