A look to the data reported in Table 13 reveals that all the four parameters namely Millable plant population, cane height, cane weight and number of internodes showed low values suggesting inadequate growth or unfavourable climate for normal growth of the crop. A glance to the climate data at Ugar reported in Table 8 and 9 reveals that the rainfall received during the summer months and grand growth period was marginal, while it was rather high during the maturity phase. Similarly, maximum and minimum temperatures were high through out it was high in grand growth and maturity phase upto 15th of November. All this situation is not considered to be congenial for the normal growth of the crop. The climatic conditions at Ugar may not be truly applicable to that at Ainapur location.
But if the trend noted at Ugar is likely to be the same at Ainapur also, there it is not surprising that the crop growth suffered heavily, giving average millable plant population of 20781, height 210 cm, cane weight 1.52 kg and number of internodes only 27 (Table 13). However, the Ratoon yield data reported in Table 14 also suggests that the climatic conditions may not be so adverse as observed at Ugar or conditions were better during the maturity phase at Ainapur. The Ratoon yields in Different treatments (Table 14) are quite reasonable and the effect of different treatments on cane yield is also significant. Though the treatments T2 (recommended dose of N, P, K fertilizers) produced the highest yield of 53.12 MT/acre, the treatment 5 (1/2 the dose of V.C. + 1/2 the dose of C.F.) also produced more of less the same yield thereby suggesting the important role played by vermicompost in helping to reduce the fertilizer dose to the extent of 50 per cent without sacrificing the level of cane yield. The average cane yield obtained was 47.64 MT/acre. This is not bad for a Ratoon crop growing in unfavourable climatic conditions. better fertility of the soil may also be responsible for beneficial effect on cane yield.
For juice quality only two parameters namely - pol per cent cane and N.R. % could be studied for want of time. The values are reported in Table 15. A look to the values in Table 15 suggests that the pol value was normal and the effect of different treatments on this paraments was non-significant. Treatment T4 (3/4th V.C. + 1/4th C.F.) showed the highest pol value of 21.87 unit. Surprisingly, the effect of different treatments on sugar recovery per cent (N.R. %) was not only significant but the values were fairly high in all treatment. Treatment 3 (vermicompost alone) showed the highest level of recovery 14.03% followed by 13.09 in control and 13.70 in Treatment 4 (3/4th V.C. + 1/4th C.F.), The average sugar recovery per cent was noted to be 13.81 which is highly satisfactory.
Thus in Ratoon experiment at Ainapur, both cane yield and Sugar recovery showed a favorable effect of vermicompost. Adoption of vermiculture technology in Ratoon cultivation suggests a great promise for both, namely, Sugarcane cultivators as well as Sugar Factory. The beneficial effect of vermicompost on Adsali cane yield at Ainapur (Table 11) is partially confirmed in Ratoon crop also.
Sugar recovery per cent and the p2 o5 contents of the juice have some kind of interrelationship. Higher contents of p2 o5 in cane juice not only reduces the cost of processing, clarification etc. but it also helps in giving higher N.R.% value (Sugar Recovery). Few samples from ainapur and U.S. W. Ratoon canes were processed to study the p2 o5 contents of the juice. The data thus collected is reported in Table 16.
| TABLE 16 |
| P2 O5 contents in Juice of a Ratoon crop at Ainapur (4-1-98) |
|
Sr. No. |
Treatment |
Replication | |
Replication || |
Average |
Sugar Recovery (%) |
| 1 |
Control (no manuring on |
304.08 |
271.5 |
291.7 |
13.98 |
| |
Fertilizers) |
|
|
|
|
| 2 |
Recommended dose of |
249.8 |
152.04 |
200.8 |
13.71 |
| |
Chemical Fert. (NPK) |
|
|
|
|
| 3 |
Vermicompost alone |
412.7 |
325.8 |
369.2 |
14.03 |
| |
5MT/ha |
|
|
|
|
| 4 |
3/4th V.C. + 1/4th C.F. |
173.76 |
271.5 |
272.6 |
13.79 |
| 5 |
1/2 V.C. + 1/2 C.F. |
369.24 |
434.4 |
401.8 |
13.76 |
| 6 |
1/4th V.C. + 3/4th C.F. |
281.36 |
407.25 |
344.8 |
13.6 |
| |
At Ugar Adsali crop |
|
|
|
|
| 1 |
Control |
|
|
110 |
13.87 |
| 2 |
Recommended dose of C.F. |
|
105 |
13.71 |
|
| 3 |
Vermicompost alone |
|
|
112 |
13.64 |
| 4 |
3/4th V.C. + 1/4th C.F. |
|
132 |
13.83 |
|
| 5 |
V.C. + C.F. |
|
|
115 |
13.55 |
A look to the data at Ainapur suggests that there is a close relation between p2 o5 contents in juice and the sugar recovery noted. The data at U.S.W. did not show such a close relationship. The sugar recovery values were fairly high in spite of low contents of p2 o5 in the juice of Ratoon crop harvested from five treatments. There may be some other factors influencing this trend. The p2 o5 availability in the soil. The level of available p2 o5 in Ainapur soil is rather high than that at Ugar.
5) Second Adsali crop of Sugarcane at U.S.W. harvested in December 1998 :
The data regarding agronomic observations, juice quality and cane yield trend in different treatments is reported in Tables 17 and 18 respectively.
The different treatments tested in the experiment of second Adsali crop of Sugarcane produced non-significant effect on all agronomic parameters (except cane height) and juice quality. Even thought, the values for millable pant population, number of internodes, girth were practically normal, the cane weight was low (and very low in 3,4 treatments) resulting in poor cane yield as seen from the data reported in Table 18. Even though the treatment effects were significant the actual yield in all treatments was very low (Average yield 36.77 MT/acre.) This can be attributed to very unfavorable climate prevalent during the crop growth period and already reported in Tables 8 and 9 earlier. Improper mineralisation of added organic and inorganic sources of nutrients and leaching losses, anerobic conditions adversely affected the up take of nutrients by the cane crop leading to low rate of dry matter accumulation resulting in low cane weight and therefore low cane yield. The season makes a whole of a difference in the performance of the crop resulting in low cane yield. (The adverse effect noted may be partly due to water logging and topographic situation in few plots).
Molybdenum deficiency produces whip-tail in cauliflower, broccoli and other Brassica crops. The deficiency of this element reduces the activity of the symbiotic and non-symbiotic nitrogen-fixing micro-organisms.
It was in 1954 that chlorine was proved to be an essential micronutrient. Its defficiency under field conditions has not been reported so far. In water-culture solutions, the leaves of chlorosis, necrosis and an unusual bronze discolouration on tomatoes.
Sodium is not an essential element for plant growth. But some crops, such as beet, celery, cabbage, kale, knol-khol, radish, rape and turnip, benefit greatly by application of soluble sodium salts, specially if the soil is deficient in potassium. Sodium is also of direct benefit to plants indigneous to the sea-shore or to irrigated arid regions. Salts of this element are said to release more of potassium from the exchange complex and to help to maintain phosphorus in a more available form. They also serve as a partial substitute for potassium in the case of potatoes and cotton.