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Over fertility is a major problem in many start up farm. It could be due to many reasons why something as such happens. Maybe there wasn't a soil nutrient analysis that was done; or maybe just plain ignorance. Under fertilizing the soil and over fertilizing the soil results in the same thing: Reduced yields. The equation does not work where >Fertilizer = >Productivity. There is a threshold level for fertilizers. This, as with all things biological in nature, is dependent on many factors. The most important factor, and one that we most definitely have control on, is the soil type. Different soils have different nutrient holding capacity. Selangor Series soils are more balanced, so is the Serdang Series. Acid sulphate soils on the other hand are rather troublesome to manage, as their nutrient holding capacity fluctuates quick broadly. (Acid sulphate soils narmally are the result of peat soils breaking down over time). Needless to say, sandy soils have the worst nutrient holding capacity, so fertilizer regimes must be more frequent, but in much more controlled amounts.
The second thing that is somewhat in our control is the crop type. Different crop species are known for their differing intensities on fertilizers. Leaf crops live leaf vegetables need more Nitrogen (N), so more nitrogen based fertilizers like Ammonium Nitrate or Urea should be applied instead of the other 3 components. For fruiting types, you need more Potassium (K), so fertilizers like Muriate of Potash should be applied more. That's just a general guide, but the key point here is that as a planter, you MUST KNOW what you are planting. No short cuts.
Rexis, I feel that what the orchard manager saw was more of an associated occurence. If truly the orchard has been over-fertilized till the point of crop reduction, how would additional fertilizer brought up by weeds help recover it? No, i feel that it is true that the weeds helped bring balance to the nutrient status of the orchard, but not by bringing in extra nutrients from deep soil; instead, i feel what had happened was that the vigorous growth nature of the weeds have managed to sap the soil of so much nutrient that balance managed to be achieved. As you noted, the orchard was heavily overgrown. However, leave it like that for a further one year, then as soil fertility reduces, the crop production may very well fall again.
Added on March 14, 2008, 2:51 pmEkestima,
Yes, agriculture and aquaculture most definitely have bright futures. The only problem that lies ahead is there is no consensus or integrative networking amongst all the farmers/planters/operator. Everyone just minds their own business; there is no unity. Just look at Thailand for a simple and quick reference, and compare Malaysia. Maybe Thailand is too advanced for Malaysia; let's just compare Indonesia to Malaysia then. I dunno how many people watches Agrotech on RTM, but if you have been watching it long enough, you would notice that 80% of the farms and techniques featured are from countries outside of Malaysia, especially Thailand and Indon.
If we want to be productive and effective, we have to push the limits. We have to crash through the barriers. We have to have a corporate spirit. I really love the quote the CEO of my company uses:" If you want to have fried eggs, you've got to crack the egg first".
Call me competitive, but I cannot stand staring at the backside of others who are running far ahead. And it's not because it's an ugly sight seeing flabby buttocks jiggling up and down.... hahaha.... At the very least I have to be running side by side with the others.
Now i don't mean that since other nation got send people into space, we should too. What i'm saying is that we must measure ourselves to what those at our level can do. Once we've broken the barrier, we move to a higher level. No such thing as 'skipping grades'. And who's at our level? Thailand? Indon? Phillipines? or are they considered too "off-track"? Then in that case, compare ourselves to Taiwan, a nation not recognized by the UN, and yet so much more advanced than ourselves.
Added on March 14, 2008, 3:11 pmHaha.... Rexis my brother, i cannot share too much information regarding the earthworm breeding to you lar... At least not until the scientist working on it decides to publish their study lor... work ethics. Furthermore, if you decide to start one breeding plot, you may run some of the smaller operators out of business lei... harharhar....! Maybe i could share more with you if i manage to be at Midvalley gathering this 29th March.
The Planter is an exclusive journal that is published by the Incorporated Society of Planters. ISP is an international body, with members from various countries, usually ex-colonial nations. Hence, being rather exclusive, membership is likewise 'exclusive'. My company has been encouraging me to join the Society, but i've yet to formally hand in my proposal. Too much work to do till no time to get the necessary signatures. I may decide to get it signed by end of March, since after the last presentation I made, the signatories have been much impressed. I hope that impression would at least motivate them to endorse my candidature to the Society.
This post has been edited by Michael J.: Mar 14 2008, 03:13 PM
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