Royal MH-30 XtraPlant Protection Product ComparisonPlant Protection Product ComparisonReport inaccuraciesReport inaccuracies

A plant growth regulator containing maleic hydrazide to control sprouting and shrinkage in storage (potatoes and onions), to improve grade and reduce undersized tubers and for sucker control on black tobacco and for sprout control in shallots (dry bulb) and garlic.

INTRODUCTION:
ROYAL MH-30 XTRA is a plant growth regulator. When applied to healthy growing plants the active ingredient, maleic hydrazide, is absorbed by the plant and will affect plant growth by stopping cell division, but not cell expansion. Through such action, ROYAL MH-30 XTRA effectively controls sprout development in potatoes and onions. When used on potatoes grown under proper growing conditions it will improve grade and reduce the number of undersized tubers.
The effect of ROYAL MH-30 XTRA is, however, temporary and the length of growth control obtained will be a function of rate, accuracy of application and crop conditions before, during and following time of application.
Optimal results can only be obtained when ROYAL MH-30 XTRA is applied to healthy plants which are free from damage from insects or disease and other forms of stress. These other forms of stress include items such as weeds, extremes (either high or low) of temperature, moisture, light intensity, or soil fertility either during the growing season and/or at the time of application.
Applications of ROYAL MH-30 XTRA to plants experiencing any such stress conditions may lead to a lack of efficacy and/or accentuate the symptoms of these conditions in the plant.
Uniform and complete coverage is essential for satisfactory results. Although ROYAL MH30 XTRA is best applied via ground equipment, there may be times when it is necessary to apply through aerial application, for instance, when the potato vines have grown across the rows. Aerial application may result in reduced performance.
All users are reminded of the necessity of reading the complete label carefully before using ROYAL MH-30 XTRA and of taking particular note of the sections entitled USE PRECAUTIONS and USE RESTRICTIONS.

DIRECTIONS FOR USE:
MIXINGINSTRUCTIONS:
1. Be sure sprayer is clean and not contaminated with any material.
2. Fill tank 3/4 full with clean water and start agitation.
3. Pour ROYAL MH-30 XTRA slowly from jug into tank.
4. Allow 2-3 minutes agitation for complete dispersion.
5. Complete filling tank.
6. NOTE: ROYAL MH-30 XTRA already contains a surfactant; hence the addition of further wetting agents or commercial spray adjuvants is not recommended.

USE PRECAUTIONS:
 KEEP OUT OF REACH OF CHILDREN.
 Causes eye irritation. DO NOT get in eyes.
 DO NOT enter or allow worker entry into treated areas for 12 hours following application.
 Field sprayer application: DO NOT apply during periods of dead calm. Avoid application of this product when winds are gusty. DO NOT apply with spray droplets smaller than the American Society of Agricultural Engineers (ASAE) medium classification. Boom height must be 60 cm or less above the crop or ground.
 Aerial application: DO NOT apply during periods of dead calm. Avoid application of this product when winds are gusty. DO NOT apply when wind speed is greater than 16 km/hr at flying height at the site of application. DO NOT apply with spray droplets smaller than the American Society of Agricultural Engineers (ASAE) medium classification. To reduce drift caused by turbulent wingtip vortices, the nozzle distribution along the spray boom length MUST NOT exceed 65% of the wing- or rotorspan

POTATOES
ROYAL MH-30 XTRA is a valuable component of a comprehensive potato program which has, as its main objective, the production and maintenance of quality potatoes both in the field and during the storage period.

SPROUT CONTROL: A single field treatment of ROYAL MH-30 XTRA will control sprout development in storage by prolonging the naturally-occurring dormant state of the potato.
ROYAL MH-30 XTRA will control sprout development in all potato varieties, however the length of control obtained in a given season will be a function of several factors including variety, growing conditions, application accuracy, length of storage period and conditions during the storage period. ROYAL MH-30 XTRA will not make a poor-keeping potato into a good-keeping potato. For example, varieties that break dormancy rapidly (such as Norchip) will sprout sooner than varieties such as Russet Burbank, which characteristically hold for a longer period of time. While ROYAL MH-30 XTRA can be effectively used on Norchips, growers should not expect this variety to hold as well as treated Russet Burbanks.

ADDITIONAL BENEFITS: In addition to sprout control, ROYAL MH-30 XTRA can help reduce storage losses and improve potato quality through a number of additional effects on the potato. Both the extent and number of these benefits obtained will depend on several factors such as variety and local growing conditions. These additional benefits will not always be achieved, therefore a grower should concentrate on obtaining good sprout control with
ROYAL MH-30 XTRA, accepting these others as add -on bonuses when they are realized.
MAY IMPROVE GRADE: May improve grade by reducing roughness of potatoes, especially Russet Burbanks, if application is made prior to any secondary tuber formation.

REDUCES NUMBER OF UNDERSIZED POTATOES:
Timely applications of ROYAL MH-30 XTRA can substantially reduce the number of undersize potatoes left in the field at harvest, by helping eliminate late season 'sets' of potatoes.

REDUCTION OF VOLUNTEER POTATOES: ROYAL MH-30 XTRA application can reduce the number of volunteer potatoes the following spring by reducing the number of late season sets left in the field.

REDUCES SHRINKAGE: With ROYAL MH-30 XTRA inside the tuber, potatoes do not respond as readily to external stimuli. As a result, potato respiration rates do not accelerate as quickly in storage, hence shrinkage can be reduced by up to 15 percent.

RATE: Apply ROYAL MH-30 XTRA at a rate of 12.6 L, in a minimum of 300 litres of water, per hectare by ground equipment or a minimum of 100 litres, per hectare by aerial equipment. Aerial application may result in reduced performance.

TIMING: Apply ROYAL MH-30 XTRA when the smallest tubers that will reach harvestable size are at least 5 cm in diameter. The timing of application may occur within the period between two - three weeks past full bloom and two weeks before expected date of topkill or first frost. Apply no later than 10 days before topkill.
Once ROYAL MH-30 XTRA is translocated down to the potato tuber, further growth will be limited. Therefore, the majority of tubers must be at least 5 cm in diameter if they are to reach a minimum size of 110-170 grams at harvest.

Under conditions where secondary tuber sets are common, the grower may choose to delay application until these smaller tubers have also sized. Care must be exercised that application is not delayed too long so that the interval between ROYAL MH-30 XTRA application and the use of a vine killer or occurrence of frost is less than 2 weeks.