I= STUDIES ON WEED CONTROL IN SUGARCANE AND ALLOPATHIC EFFECTS OF EUCALYPTUS ON FIELD CROPS
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Title of Thesis
STUDIES ON WEED CONTROL IN SUGARCANE AND ALLOPATHIC EFFECTS OF EUCALYPTUS ON FIELD CROPS

Author(s)
Ejaz Ahmed Khan
Institute/University/Department Details
Faculty Of Agriculture/ Gomal University, Dera Ismail Khan
Session
2003
Subject
Agronomy
Number of Pages
127
Keywords (Extracted from title, table of contents and abstract of thesis)
weed control, sugarcane, eucalyptus, field crops, herbicides, conyza stricta, agro-forestry, allelopathic effect, seed germination, fertilizer management, benefit cost ratio (bcr)

Abstract
Different herbicides were evaluated for the control of the weed conyza stricta in sugarcane planted at different geometrical patterns under agro-ecological conditions of D.I Khan during 2000-2001 and 2001-2002. The experiments were conducted in randomized complete block design with split plot arrangement with each treatment replicated thrice. Main plots comprised of various planting geometries whereas sub plots were of herbicidal treatments. Weed parameters recorded were population, height recorded were stalk stool-1 , height, weight with and without top, stem girth and internodes per cane and yodel in tons per hectare. Benefit cost ratio (BCR) was computer for determining economic benefit. Means of various parameters depicted that planting geometries significantly differed for weed and sugarcane. The planting geometry of triple rows at 120 cm produced the highest decrease in the weed population and gave the highest yield of 58.2 t ha-1 as compared to other geometries used in this study. All the herbicide significantly decreased weed population and increased cane yield ha-1 compared to control. The herbicide Dicuran MA60 alone gave the highest cane yield of 59.33 t ha-1 at planting geometry of triple row at 120 cm and 48.22 t ha-1 when average across geometries. The control gave significantly lowest yield of 33.38 t ha-1. The herbicide Dicuran MA60 gave the highest benefit cost ratio (BCR) of 2.19 and the highest gross income of Rs. 51,913/- at planting geometry of triple row at 120cm. The lowest BCR ratio of 1.72 wit the lowest gross income of Rs. 36,164/- was depicted in the control on the same planting geometry. It is suggested that for obtaining economic yield from sugarcane at D.I Khan, it may be planted at triple rows 120 cm apart with application of dicuran MA60 30 days after planting for control of conyza stricta.

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981.8 KB
S. No. Chapter Title of the Chapters Page Size (KB)
1 0 Contents
169.35 KB
2 1 Introduction 1
49.35 KB
  1.1 Importance of sugarcane 1
  1.2 Importance of weed control in sugarcane 2
  1.3 Brief Botany of conyza stricta 3
  1.4 Aims of thesis 4
3 2 Review of literature 6
192.63 KB
  2.1 Effect of plating Geometry on sugarcane 6
  2.2 Effect of Herbicides on weeds in sugarcane 11
4 3 Materials and methods 30
48.86 KB
  3.1 Sugarcane variety 30
  3.2 Soil and weather 30
  3.3 Fertilizer management 30
  3.4 Herbicides 31
  3.5 Plant protection measures 31
  3.6 Management of irrigation 32
  3.7 Experimental detail 32
  3.8 Observation recorded on weed parameters 33
  3.9 Observation recorded on sugarcane parameters 33
  3.10 Benefit cost ratio (BCR) 34
5 4 Results and discussions 34
270.65 KB
  4.1 Effect of planting Geometries and herbicides to control conyza stricta in Sugar cane 36
  4.2 Sugarcane parameters 55
  4.3 Benefit cost ratio 74
6 5 Effect of water extract of eucalyptus on leaves on the growth of maize and cotton 76
229.61 KB
  5.1 Introduction 76
  5.2 Review of literature 76
  5.3 Materials and method 85
  5.4 Results and discussions 87
7 6 Summary 101
26.07 KB
8 7 Conclusions and recommendations 106
21.21 KB
9 8 Literature cited 108
135.17 KB
10 9 Appendices 126
16.85 KB