Seed pelleting to improve nodulation of tropical and subtropical legumes. 6. The effects of dilute sticker and of bauxite pelleting on nodulation of six legumes

1973 ◽  
Vol 13 (65) ◽  
pp. 700 ◽  
Author(s):  
DO Norris
Keyword(s):  
Rock Phosphate ◽  
Methyl Cellulose ◽  
Lablab Purpureus ◽  
Dolichos Lablab ◽  
Rhizobium Strains ◽  
Tropical Legumes ◽  
Series Of Experiments ◽  
Macroptilium Atropurpureum ◽  
Effect On Yield ◽  
Previous Series

In a field experiment at Beerwah, Queensland, bauxite pellet applied with 4 per cent methyl cellulose sticker and 1 per cent methyl cellulose as a simple sticker for the inoculant were compared with the standard treatments used successfully in a previous series of experiments. These were peat applied with 4 per cent methyl cellulose, and Florida rock phosphate pellet with 4 per cent methyl cellulose sticker. Legumes and Rhizobium strains tested were Desmodium uncinatum and D. intortum, inoculated with Rhizobium CB627, Lablab purpureus (formerly Dolichos lablab), Glycine wightii (three cvs. Clarence, Cooper and Tinaroo), and Macroptilium atropurpureum (formerly Phaseolus atropurpureus), all inoculated with Rhizobium CB756, and Lotononis bainesii inoculated with Rhizobium CB376. All were planted after 2-day and 28-day storage of inoculated seed. The effectiveness of the treatments was checked by nodule counting and by serologically identifying the strains in a random sample of nodules from each treatment. The majority of nodules formed came from the applied inoculants, but there were no differences between the inoculation treatments in nodulation criteria or effect on yield. The experiment confirmed that bauxite is a satisfactory pelleting material for tropical legumes, but the application of the inoculant peat with 1 per cent methyl cellulose leads to equally good nodulation.

Seed pelleting to improve nodulation of tropical and sub-tropical legumes. 2. The variable response to lime and rock phosphate pelleting of eight legumes in the field

1971 ◽  
Vol 11 (50) ◽  
pp. 282 ◽  
Author(s):  
DO Norris
Keyword(s):  
Beneficial Effect ◽  
Rock Phosphate ◽  
Field Experiments ◽  
The Other ◽  
Variable Response ◽  
Negative Effects ◽  
Cultivated Soil ◽  
Rhizobium Strains ◽  
Tropical Legumes

To determine whether a lime oy rock phosphate pellet has any beneficial effect on nodulation of tropical legumes two field experiments were done using Centrosema pubescens, Dolichos lab lab, Desmodium intortum, D. uncinatm, Lotononis angolensis, and Glycine wightii cvs. Cooper, Clarence and Tinaroo. At one site the experiment was sod-seeded into a Paspalum-Axonopus sward, at the other it was sown into cultivated soil. The second site was acid and calcium-deficient and lime was deliberately withheld to introduce bias towards a lime pellet response. At both sites each legume was tried separately with two effective Rhizobium strains and the effect of lime or phosphate pelleting was assessed by comparison with inoculation done with Cellofas sticker without pellet. Nodulation was assessed on 100 plants of each species at ages from seven to twelve weeks. At the sod-seeding site Lotononis and D. intortum did not establish, but the remaining twelve legume-Rhizobium combinations showed no benefit in nodulation from lime pelleting. At the calcium-deficient site lime pelleting in comparison with Cellofas inoculation improved nodulation with eight legume-Rhizobium combinations, had no effect with six combinations, and depressed nodulation with two combinations. Rock phosphate pelleting showed no benefit in nodulation in twelve combinations under sod-seeding. At the calcium-deficient site four combinations showed improved nodulation and 12 combinations no effect, but there were no negative effects. Good nodulation resulted from simple Cellofas inoculation at both sites, with the exception of D. uncinatum at Beerwah. Pelleting treatments gave no yield increases with the exception of D. uncinatum at Beerwah where yield was significantly increased by lime pelleting. No evidence in favour of routine pelleting with either lime or phosphate was provided bv these experiments. The superiority of certain rhizobial strains as field inoculants was demonstrated.

scholarly journals EFFECT OF SOME PROCESSING METHODS ON NUTRIENT CONTENT AND ANTI-NUTRITIONAL FACTORS OF A VARIETY OF DOLICHOS LABLAB (LABLAB PURPUREUS L.) BEANS GROWN IN KENYA

10.37512/500 ◽  
2019 ◽  
Keyword(s):  
Proximate Composition ◽  
Crude Protein ◽  
Nutrient Content ◽  
Trypsin Inhibitor Activity ◽  
Research Station ◽  
Lablab Purpureus ◽  
Processing Methods ◽  
Nutritional Factors ◽  
Dolichos Lablab ◽  
Trypsin Inhibitory Activity

This study aimed to determine the effect of different processing methods on the proximate composition and anti-nutritional factors of Dolichos lablab beans (Lablab purpureus) of Kenya. The seeds of KAT/DL-2 variety,sourced from Kenya Agricultural Livestock and Research Organisation, Katumani Dryland Research Station were sorted, then subjected to different processing methods (soaking, cooking and germination). The samples were analysed for proximate composition, tannins, phytates and trypsin inhibitory activity. The results showed a significant increase (2.0%) in crude protein content for germinated lablab beans while carbohydrates content was high in cooked samples. The variety KAT/DL-2 had high levels of phytates; 723.6 mg/100g and tannins 330.3mg/100g and trypsin inhibitor activity 1.3mg/100g. Cooking achieved the highest reduction of anti-nutrients with 88% reduction in TIU. The results revealed that the anti-nutrients in lablab beans can be reduced using different methods of processing. However, there is need to investigate the effect of combined methods on the nutrients and anti-nutrients.

Correction - Seed pelleting to improve nodulation of tropical and subtropical legumes. 3. A field evaluation of inoculant survival under lime and rock phosphate pellet on Dolichos lablab

1971 ◽  
Vol 11 (53) ◽  
pp. 677
Author(s):  
DO Norris
Keyword(s):  
Soil Moisture ◽  
Dry Matter ◽  
Rock Phosphate ◽  
Field Evaluation ◽  
Strong Interactions ◽  
N Fixation ◽  
Rhizobium Strain ◽  
Nodule Number ◽  
Dolichos Lablab ◽  
Inoculant Strain

Use was made of a soil, in which the indigenous rhizobia are incapable of nodulating Dolichos lablab, to study nodulation of this species resulting from lime pelleted and rock phosphate pelleted seed after storage for one day and one, two, four, six, and eight weeks at 27�C. Cellofas A was used as sticker and two strains of Rhizobium were compared. From each sowing plants were dug at eight weeks of age, and the treatments compared using the criteria : number of plants in row, per cent plants nodulated, number of nodules per plant, per cent of nodules on the crown and yield of dry matter per row. Rock phosphate pelleting was superior to lime pelleting in survival of inoculant on the seed, survival of plants in the row, and promotion of nodulation. Lime pelleting depressed yield at eight weeks of age but not at four months. Both strains of inoculant survived one month's storage satisfactorily when simply applied with sticker. Total nodule number fluctuated greatly with time of planting, and was inversely related to per cent crown nodulation, suggesting chat soil moisture at planting may have had a significant effect on nodulation. Strong interactions of inoculant strain with pelleting treatment and time of planting stressed the difficulty of interpreting nodulation effects resulting from pel!etinp treatments. Rhizobium strain CB756 was greatly superior to CB159 in survival on stored seed, nodulation criteria, onset of N fixation and yield.

Effects of Ground Rock Phosphate and Elemental S on Yield and P Uptake of Maize in Western Kenya

1981 ◽  
Vol 17 (4) ◽  
pp. 383-387 ◽  
Author(s):  
A. R. Bromfield ◽  
I. R. Hancock ◽  
D. F. Debenham
Keyword(s):  
Rock Phosphate ◽  
P Uptake ◽  
Cost Ratio ◽  
Single Superphosphate ◽  
Western Kenya ◽  
The Third ◽  
Maize Yields ◽  
P Recovery ◽  
Effect On Yield

SUMMARYThe effect on maize yields of ground rock phosphate, alone or mixed with sulphur in either of two proportions, and of single-superphosphate, was measured at five consecutive harvests. At the first harvest single-superphosphate increased yield by 1.54 t and the best of the mixtures by 0.56 t grain/ha. Ground rock phosphate alone had no effect on yield. At the third harvest there were no yield differences between sources; because yields produced by rock phosphate and the mixtures improved. The cumulative increase in yield produced by single-superphosphate was 3.58 t/ha and by rock phosphate 2.69 t grain/ha, but because the fertilizer cost ratio was 3:1, additional grain produced by rock phosphate cost half as much. The apparent P recovery ranged from 5.40 to 8.28 kg/ha, with most from single-superphosphate and least from the mixture containing most elemental-S.

Experiments on the spacing of sugar beet: I. Results based on plot yields

1939 ◽  
Vol 29 (1) ◽  
pp. 48-57 ◽  
Author(s):  
F. H. Garner ◽  
H. G. Sanders
Keyword(s):  
Sugar Beet ◽  
Compensatory Growth ◽  
Correlation Coefficients ◽  
General Rule ◽  
The West ◽  
Spacing Factor ◽  
West Midlands ◽  
Series Of Experiments ◽  
Effect On Yield ◽  
The Relationship

Since sugar beet was first introduced into this country many experiments have been conducted to determine the effects of spacing on yield: the general advice based on these experiments is that beet should be spaced as closely as working conditions permit. Davies (1931) carried out a series of experiments in the West Midlands, and came to the conclusion that yield was not related to the number of roots per acre, but was affected by their distribution. His work demonstrated that wide row distances could not be compensated by narrow spacing in the row. He found that yield increased as row distance decreased down to 16 in., but that singling distances of 4—10 in. produced no differences in yield of roots: the yield of green leaves, on the other hand, was increased as singling distance decreased, but was unaffected by row distance (Davies & Dudley, 1929). Although Davies' results would be generally accepted as a true expression of the general rule, many isolated spacing experiments fail to conform to them; it is possible that discrepancies in results, that undoubtedly occur, may be due to variations in the “plant” actually obtained in the experiments. Engledow et al. (1928), as a result of counts and weights taken on ordinary farm crops of sugar beet, concluded that uniformity of “plant” was a most important spacing factor affecting yield. In America Brewbaker & Deming (1935) have found yield to be related to percentage stand (correlation coefficients varying from +0·35 to +0·70), the regression between the two variables being approximately linear over the range studied. They also found that uniformity of “plant” was more important than spacing distances, either between or in the rows. Their work showed that single gaps had little effect on yield, because neighbouring beet compensated for them to the extent of 96·2%; serious loss of yield only occurred, therefore, with adjacent gaps. Pedersen (1933) studied the relationship between percentage of gaps and yield in a large number of Danish experiments with sugar beet and mangolds. In the case of sugar beet he found that the compensatory growth of neighbouring roots amounted to 76% for a single gap, and that the percentage compensation decreased as the size of gap (i.e. number of missing beet) increased. In an earlier paper (Pedersen, 1931) he had shown that under ordinary field conditions the distribution of gaps was approximately random.

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