Plan­ning for mung beans

What to con­sider for plant­ing

Warwick Daily News - South West Queensland Rural Weekly - - Rural Weekly - PAUL MCIN­TOSH

AF­TER a very rough sum­mer with just enough early rain to en­tice an Oc­to­ber/Novem­ber plant­ing op­er­a­tions in many ar­eas, we then had big falls of rain in Fe­bru­ary to pro­duce a par­tial to large re­cov­ery in many sad crops. Mung beans seemed to re­cover the best of many crops. How­ever we may have two very dis­tinct stages of de­vel­op­ment that will im­pact on our des­ic­ca­tion tim­ing de­ci­sions.

This can be a com­mon prob­lem where we have very brown/black or ma­ture pods and then fur­ther in the bush, we have many green or slightly yel­low pods and the de­ci­sion when to des­ic­cate be­comes more dif­fi­cult.

The first thing is to be able to de­ter­mine what per­cent­age of pods are phys­i­o­log­ica ma­ture and it does not nec­es­sar­ily de­pend on colour of the pod. Phys­i­o­log­i­cal ma­tu­rity across all crops is ba­si­cally when the seed or ker­nel is sep­a­rated from the plant. This means any­thing to do to the main body of the plant can­not im­pact on the seed.

Sorghum has black point, maize has black layer and mung beans have been known as sepa­ra­tion or ab­scis­sion layer. The eas­i­est way to judge this phys­i­o­log­i­cal ma­tu­rity is by get­ting the ques­tion­able mung bean pod and gen­tly slit­ting open the en­tire length of the pod. You then turn the pod up­side down and if all the seeds fall out of the pot like the bot­tom picture, then that en­tire pod is classed as Phys­i­o­log­i­cal ma­ture or PM.

You can then make a de­ci­sion of what level of PM is across the pad­dock. So over 90 per cent is our ac­cept­able level of des­ic­ca­tion and I make no bones about it, the judg­ing of this 90 per cent level is fairly dif­fi­cult in a multi-stage crop.

You have got pos­si­ble im­pend­ing wet weather con­di­tions, header avail­abil­ity, wind di­rec­tion for your Glyphosate, Re­glone or Ally only her­bi­cide op­tions, so the past cou­ple of weeks in your mung bean crop’s life can be dif­fi­cult. Even with my long years of ex­pe­ri­ence, I do make lengthy in­spec­tion times over all ar­eas to make the best de­ci­sion.

It is not all about yields in mung beans, it’s also about qual­ity for dol­lar re­turns.

❝Mung beans seemed to re­cover the best of many crops. — Paul McIn­tosh

PHOTO: FILE

PLANS TO PLANT: Paul McIn­tosh said mung beans re­cover from var­i­ous con­di­tions the best of many crops.

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